Auxiliary apparatus for condensers



R. SUCZEK- AUXILIARY APPARATUS FOR CONDENSERS.

APFLl-CAT |0N mu) MAY 9, m1.

1 342,47 Patented J une 8, 1920.

/ A" VE N TOR.

UNITED STATES PATENT OFFICE.

ROBERT SUCZEK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO C. H. WHEELER MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A. CORPORA- TION OF PENNSYLVANIA.

AUXILIARY APPARATUS FOR CONDENSERS.

hil -12.471

Specification of Letters Patent.

Patented June 8, 1920.

1;: all whom it may oncern.

lic it known that l, Roonu'r Snoznn, a c'lliYcn of the Czech-Slovak Republic, residin; in the city of Philadelphia, county of Philadelphia, and State of Pennsylvania, have invented certain new and useful Improvements in Auxiliary Apparatus for Condensers, of which the following is a specification.

My invention relates to apparatus for removing condensate or air, or both, from a condenser.

ll'ly invention resides in apparatus for removing condensate from a condenser comprising an ejector submerged in the condensate for delivering the condensate against a higher pressure.

.lly invention resides also in apparatus comprising in addition to the condensate removing ejector an air removing ejector which delivers into the condensate removing ejector.

My invention resides also in ejector condcnsatc removing apparatus provided with automatic means for controlling the supply of motive luid to the ejector in response to changes in amount of condensate.

And my invention resides in other features in combination with ejector condensate removing apparatus.

For an illustration of several examples of apparatu. embodying: my invention, referonce is to be had to the accom ianviru drznv Pip. 4 is a vertical sectional view, some parts in elevation, through a condenser and assoc" ted air and condensate removing appar. ,us in conjunction with additional m ms for raising the air to higher pressure.

i r 5 is a vertical sectional view through [1 'paratus for removing air and condensate.

Fig. 8 is a vertical sectional view some 1 I 3 parts an elevation, through a condenser and port on ol' a cmidcnscr and associated apassociated means for removing air and condensate with automatic control responsive to changes in condensate level.

Referring to Fig. 1, C represents the shell of a condenser, for example, the shell of a surface condenser having the inlet E for the steam to be condensed and the openin 0 through which the air may be remover? by any suitable apparatus for maintaining within the condenser C the desired de ree of vacuum. The steam entering at 13 is condensed in well known manner into Water, which is the condensate which collects in the bottom of the shell C and in the hot well or other rece tacle H. Dis osed within the hot well is the nozzle of ejector apparatus comprising in addition the diffuser guides B and B disposed in alinement with the combining tube or diffuser D which in turn delivers directly, or indirectly through any suitable length of pipe, into the centrifugal or other type of pump P driven by the steam turbine T or any other suitable motor, as an electric motor. When the motor T is a steam turbine it receives steam through the pipe 3 and exhausts it through the pipe .9 controlled by the valve V. Branched from the exhaust pipe 8 is the pipe U controlled by valve V and communicating with the pipe .9 communicating with the nozzle N and controlled by the valve Y. Communicating with the pipe 8 is another pipe a connected with any suitable source of motive fluid, as live steam, and controlled by the valve V Upon the upper surface of the condensate collected in the bottom of the condenser and hot well H is the float l carried on the end of the lever m secured upon the pivotal shaft t which extends through a vacuum tight joint to the exterior of the condenser shell C where there is socured thereto the link a: pivoted at n to the link we pivoted at 7 to the link 2 whose other end is secured upon the pivotal shaft '0 upon which is secured the valve Y.

With the valve V closed and the valves V and V open, the steam turbine T drives the pump P and pumps condensate from the hot well H and discharges the same against atmospheric or any other pressure, the exhaust steam from the turbine T passipg through the pipe 8 and through the valve V to atmosphere, or to acondenser, feed water heater or any other suitable point. SimuL taneously live steam admitted through the valve V and pipes 8 8 passes the open valve Y to the nozzle N and in expanding causes to be drawn into themembers B, B and into the difi'user D the condensate in the hot well H, delivering the same at higher pressure to the pump P, thus causing the pump 1 to operate with a submergencc greater than that due to the height of water level V in the absence of the ejector.

Ur with the valves V and V closed and the valve V open, the ejector nozzle N is supplied with exhaust steam from the turbine T, in which case the action is similar to that above described.

Or when using exhaust steam as described live steam may also be used by partially opening the valve V and thereby thIOttllXlg the live steam to a pressure substantially the same as that of the exhaust steam. Or exhaust steam from any other source than the turbine T may be employed; for example, the exhaust steam from the turbine or engine driving the pump which supplies the cooling water to the condenser.

The motive fluid delivered to the nozzle N is controlled by the float F. in case the water level \V falls. the float F descends and through the system of levers described moves the valve Y toward closed position, thereby shutting ofi more or less completely the supply of motive fluid to the nozzle N, with the result that the ejector removes or assists in removing less condensate, thereby causing the level to again rise to maintain proper submergence of the ejector. And in (use the water level V falls suiliciently, the valve Y will be completely closed until the water level rises suliiciently, in which case the float I will again open the valve Y.

Referring to Fig. 2, the air opening 0 is shown as communicating with an ejector having the nozzle M to which steam or other suitable motive fluid is supplied, therebv drawing air from. within the condenser C and compressing it. the motive fluid and entrained air being delivered to the second ejector whose nozzle is N supplied with suitable motive fluid. as steam, which entrains the motive fluid and air from the first ejector and delivers the same through the discharge nozzle l) which acts as an ejector motive fluid nozzle terminating within the hot well 1'] in front of the difi'use i open at its end and submerged within the condensate in the well H and delivering into the chamber L having the weir partition Q, the air outlet 1') and the condensate outlet 0 The first ejector whose nozzle is M withdraws air from the condenser (l and compresses it, delivering the same into the second ejector whose nozzle is N, which then delivers the air and motive fluid through the nozzle D into the diffuser 1), further increasing. the pressure of the air, and drawing into the diffuser D condensate from the hot well H and delivering both air and condensate at atmospheric pressure or any other suitable pressure above or below atmospheric into the chamber L, where the air separates from the condensate and passes out through the opening 0, while the condensate overflows the weir partition Q and is drawn off by pump or otherwise throu h the outlet In Fig. 3 the air outlet 5 connects with the ejector whose nozzle is N which with draws air from the condenser C and raises its pressure and delivers the same and the motive fluid through the discharge nozzle D which terminates within the hot well H in front of the guide tube 13 which is submerged in the condensate. The tube B extends horizontally through the downwardly extending tube (at open at its lower end and connecting at its upper end with the condensate outlet of the condenser C. This causes the condensate to flow downwardly throu h the tube Ur before entering the hot well and thereby forms a trap or seal to prevent air delivered by the ejector from rising directly back into the condenser, which would result in again lowering the vacuum and in elfect rendering the ejector useless so far as air removal is concerned. The outlet of the tube B is disposed in front of the diffuser tube 1) whose outlet end is upwardly turned and terminates within the air separating chamber L. whose air outlet 0 connects with the air pump K and whose condensate outlet communicates with the suction of the condensate pump P, both pumps K and 1 being driven by any suitable motor, as the steam turbine T- In this case the ejector withdraws air from the condenser C and compresses it to a pressure at least as great as that corre sponding with the subn'iergence of the discharge nozzle l) below the water level W. In issuing from the tube 1), which acts as a motive fluid nozzle for the submerged ejector, the steam of the mixture is condensed. thereby producing a vacuum, which causes condensate to be drawn into the tube It, and due to the momentum of the condensate so attained it is delivered by the tube B to the tube 1 with sullicient velocity to cause it to issue from the tube 1) within the chamber L at a still higher pressure. This u'essurc generally being below atmospheric pressure. an air pump 18. increases the pressure of the air separated in the chamber L to atmospheric pressure or any other suitable pres sure. and the pump P simultaneously removes the condensate to any suitable higher pressure. as atmospheric pressure.

In Fig. 4 the air outlet of the condenser communicates with the ejector whose nozzle is M, the ejector delivering through the tube I with the discharge nozzle D of a second ejector terminating and pointing upwardly within the air separating chamber L. Disposed in vertical alinement above the nozzle D which acts as the motive fluid nozzle for the submerged ejector, are the guide tubes 15 and B, the former supported by webs or ribs 9* upon the tube B, which in turn is supported by any suitable means, as upon the wall of the chamber L and the weir partition Q. The condensate outlet ()2 communicates with the pump 1 driven by any suitable motor.

Vertically alined with the tube B is the funnel J having its receiving orifice within the chamber ii and delivering to an ejector whose nozzle is ll supplied with steam or other motive fluid from any suitable source.

In this case the ejector whose nozzle is M withdraws air from the condenser C and raises its pressure, the mixture of motive fluid and air being, discharged by the noz zle 1) into the condensate, which condenses the steam, producing a vacuum which assists the jet issuing from the nozzle l) to draw condensate into and upwardly through the tubes B and B, delivering the condensate over the top edge of the tube B into one compartment of the chamber L from which it overflows the weir partition'Q into the second compartment, from which it is withdrawn by the pump P. The air separates from the condensate and passes out through the funnel J to the ejector whose nozzle is R, which further raises the pressure of the air to atmospheric pressure or any other desired pressure It will be understood that the weir partition Q may be omitted, and the top edge of the tube ll may constitute a weir over which the condensate iiows to the outlet orifice O.

In Fig. 5 C represents the bottom portion of a condenser shell, such. for example, as used on board ship. Both air and condensate are withdrawn through the oulet U, the condensate collecting in the hot well or other receptacle l l within which is submerged an ejector whose nozzle is N. which receives steam or other suitable motive fluid. The nozzle N is alined with the guide ring B, which in turn is alined with the diffuser D communicating with the suction chamber H of the pump 1. The air passing out from the condenser through the opening passes upwardly to the ejector whose nozzle M is supplied by steam or any other suitable fluid. This ejector raises the pressure of the air and delivers it together with the motive fluid into the condenser in which the motive fluid is more or less completely condensed, the condensate passing onwardly to the suction chamber 5, as does also the air. the condensate and air being removed from the suction chamber S by the pump 1, which may be any suitable type of pump,

but preferably a reciprocating wet air pump.

The ejector whose nozzle is n imparts pres sure and velocity to the condensate and delivers the same at higher pressure to the suction chamber S in assistance to the pump 1".

In Fig. 6 the float I1, responsive to changes in level of the condensate in the hot well H, controls the valve Y which controls the supply of st aim or other motive fluid delivercd bv pipe 5 to the ejector whose nozzle is l\ disposed within a chamber X through whose wall extends the guide tube B into a hot well H in alincment with the diffuser tube 1. whose inlet is within the hot well H and which discharges into the air separating chamber I: having the air outlet 0 and the condensate outlet The air outlet 0 of the condenser communicates with a steam or other ejector Z, which withdraws air trom the condenser and raises it in pressure and delivers it at higher pressure into the chamber X. From the chamber X the motive fluid and air from the ejector Z is drawn by steam issuing from the nozzle N through the tube B, which acts as a motive fluid nozzle of the submerged ejector, into the hot well H, where condensation of the steam takes place, producing a vacuum which assists the jet from the tube B in drawing condensate into and forcing it through the dili'user D and delivering the same at still higher pressure into the air separating chamber L.

As the level \V of the condensate falls. the float F falls and moves the valve Y to ward closed position, thereby reducing the amount of steam supplied to the nozzleN. and thereby causing the motive fluid issuing therefrom to remove less condensate from the chamber ii. in also the level falls far enough, the valve Y will be completely closed. And as the level of the condensate rises again due to aci-umulation of condensate, the float l will rise and open the valve Y to ,roper degree.

In ioth Figs. 1 and (l the float l may con trol the action oF the ejector in any suitable way as by adjusting an adjustable diffuser or adjustable nozzle. or both.

\Vhile the ejector-s hcrein disclosed are of simple single nozzle types, it will be understood that auy suitable forms of ejector may be uscd. as for example, those employing a plurality of steam nozzles, or ejectors having annular nozzles and diltuscrs. or ejectors oi the latter type in which the difluser is disposed outside of and surrounds the annular nozzle which dischargcs radially into the diffuser.

\Vhat I claim is:

l. The combination with a condenser, of a condensate receptacle, an ejector submerged in the condensate and in communication with said receptacle for removing the condensate therefrom to a region of higher PI'QSSUI, and an ejector for removing air from said condenser delivering into said first named ejector.

2. The combination with a condenser, of a condensate rece tacle, an ejector submerged in the con ensate and in communication with said receptacle for removing the same therefrom to a region of higher pressure, an ejector for removing air from said condenser delivering into said first named ejector, and means receiving air removed with the condensate by said first named ejector and raising the same to higher pressure.

3. The combination with a condenser, of a condensate receptacle, ejector apparatus for removing air from said condenser and condensate from said receptacle, a closed chamber into which the air and condensate are delivered, a pump for removing condensate from said chamber, and means for removing the separated air from said chamber and delivering it to a region of higher pressure. 7

4. The combination with a condenser, of three ejectors, the first ejector withdrawing air from the condenser and delivering it at higher pressure to the second ejector, a condensate receptacle, said second ejector removing condensate from said receptacle and delivering the same and the air from the first ejector to higher pressure, and the third ejector further raising the pressure of the air.

5. The combination with a 'condenser, of ejector apparatus removing air and condensate therefrom, a closed chamber receiving said air and condensate, the condensate and air separating from each other in said chamber, and means receiving air from said chamber and raising it to higher pressure.

6. The combination with a condenser, of ejector apparatus removing air and condensate therefrom, a closed chamber receiv-.

mg said air and condensate, the condensate and air separating from each other in said chamber, and an ejector receiving air from said chamber and raising it to higher pressure.

7. The combination with a condenser, of ejector apparatus removing air and condensate therefrom, a closed chamber receiv ing said air androndensate, the condensate and air separating from each other in said chamber, means receiving air from said chamber and raising it to higher pressure, and a pump for removing condensate from said chamber.

8. The combination with a condenser, of ejector structure for removing condensate therefrom, an ejector for removing air from said condenser delivering into said ejector structure, a closed chamber receiving the air and condensate, and means for removing the air from said chamber and raising it to higher pressure.

9. The combination with a condenser, of ejector structure for removing condensate therefrom, an ejector for removing air from said condenser delivering into said ejector structure, a closed chamber receiving the air and condensate, means for removing the air from said chamber and raising it to higher pressure, and means for separately removing the condensate from said chamber.

10. The combination with. a condenseigof nozzle structure removing air and condensate therefrom, the air and condensate outlets trom said condenser being independent of each other, a closed chamber rceiving the air and condensate, and means for removing air from said chamber and raising it to higher pressure.

11. The combination with a condenser, of nozzle structure removing air and condensate therefrom, the air and condensate outlets from said condenser being independent of each other, a closed chamber'receiving the air and condensate, means for removing air from said chamber and raising it to higher pressure, and means for separately removing condensate from said chamber. e

In testimony whereof I have hereunto aftine? my signature this 3rd day of May, 19.].

ROBERT SUCZEK. 

